JP2001346497A - Apparatus for exterminating weed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that an amount of discharged charge consequently becomes insufficient or excess because an applying time of the high voltage is determined by judgment of a user in conventional apparatuses for exterminating weeds. SOLUTION: This apparatus for exterminating weeds has a mechanism informing termination of the destruction by an informing means 19 when a charge amount-measuring means 18 detects that the amount of discharged charge between electrodes 12 reaches a prescribed value and can efficiently exterminate the weeds.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weed control device used for controlling weeds in gardens, agricultural lands, and parks.

[0002]

2. Description of the Related Art Conventionally, weeds such as gardens, arable lands, and non-agricultural lands such as parks have been sprayed with a herbicide or exterminated with a mower equipped with a rotary blade. However, application of a herbicide or the like leads to soil contamination and the like, and may have a bad effect on the human body. In addition, if the mower is not handled with care, there is a risk of injury due to the rotary blade, and when fuel such as gasoline is used, it may lead to air pollution.

[0003] Therefore, a method for controlling weeds that has no effect on the environment and is effective as described above is disclosed in Registration No. 2
No. 019519. FIG. 5 is an explanatory diagram for explaining the outline of the devices individually shown and how to use the devices. In this device, a high voltage generator 4 is connected to a high voltage electrode 1 and a ground electrode 3.
, And the high-voltage electrode 1 is carried. Therefore, a discharge current flows between the weed 5 and the ground due to the spark discharge generated from the tip of the high-voltage electrode 1. The cells of the weeds are destroyed by this discharge current, the path for absorbing moisture and nutrients is destroyed, and the weeds 5 die.

[0004]

In the conventional weed control apparatus, the application time of the high voltage is determined by the user, and as a result, the discharge charge amount is insufficient or the discharge time is insufficient. There is a problem that the charge amount becomes excessive.

[0005]

SUMMARY OF THE INVENTION The present invention provides a weed control device capable of efficiently eliminating weeds without waste as a configuration for notifying the end of work when the amount of discharge charge between electrodes reaches a predetermined value.

[0006]

According to the first aspect of the present invention, when the charge amount measuring means detects that the discharge charge amount between the electrodes has reached a predetermined value, the notification means notifies the end of the extermination by an efficient means. Weed extermination equipment that can exterminate weeds.

According to the second aspect of the present invention, the high voltage generator and the charge amount measuring means are arranged in a grip portion which is gripped and operated by a user, so that the operation is easy and the weeds can be efficiently eliminated. Weed control equipment.

According to the third aspect of the present invention, the positive and negative electrodes are fixed at predetermined intervals to a fixing portion attached to a support portion connected to the grip portion, so that the operation is easy and weeds can be efficiently eliminated. Weed control equipment.

[0009]

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described. FIG. 1 is an explanatory diagram illustrating the configuration of the present embodiment. The weed removing device of the present embodiment includes a grip portion 15,
A main body portion 14 fixed to the grip portion 15; a support portion 11 connected to the main body portion 14; a fixed portion 16 rotatably connected to the support portion 11; It is constituted by a pair of positive and negative electrodes 12 attached by.

The main body 14 is provided with a high voltage generator 17 for supplying a high voltage to the pair of electrodes 12. In this embodiment, the high-voltage generator 17 has a charge amount measuring unit 18 for detecting a discharge current. Further, there is provided a notifying means 19 such as a buzzer which operates upon receiving a signal from the charge amount measuring means 18.

The high voltage generator 17 and a pair of electrodes 1
2 is accommodated inside the support portion 12 made of an insulator. The pair of electrodes 12
In this embodiment, the distance between is set to 10 cm to 15 cm, but need not be particularly limited.

The operation of this embodiment will be described below.
As shown in FIG. 1, when the user grips the grip 15 and turns on a switch (not shown) provided on the grip 15, the high-voltage generator 17 operates and the pair of positive and negative electrodes 1
A high voltage is supplied between the two. This high voltage is between 10 kV and 30
Although it is set to 0 kV, it can be set freely according to the situation without any problem. Thus, a high voltage is supplied between the pair of electrodes 12. User grips 15
When the fixing portion 16 fixed to the support portion 11 is brought close to the weed 13 by using, electric discharge occurs between the fixing portion 16 and the weed 13. For this reason, a discharge current flows through the weed 13 and the weed 1
The cells that are the pathways for absorbing water and nutrients in No. 3 are destroyed. For this reason, the weeds 13 die.

FIG. 2 is an explanatory diagram for explaining how to use the apparatus of this embodiment. The first weed 15 and the second weed 16 are
Vegetation is connected at the root. In such a case,
The operator holds the pair of electrodes 12 by the grip 15 so as to face the first weed 15 and the second weed 16.
Adjust the position of the first weed 15 and the second weed 16
And a spark discharge between the pair of electrodes 12. In this state, as shown in FIG. 2, the discharge current is: electrode → first weed leaf → first weed stalk → first weed root → soil → second weed root → second weed root It flows along the path of weed stalk → second weed leaf → electrode. For this reason, as described above, the cells of the first weed 15 and the second weed 16 are destroyed and eventually die.

At this time, in this embodiment, the discharge current supplied to the weeds is determined by the charge amount measuring means 18.
FIG. 3 is a block diagram showing a configuration of the charge amount measuring means 18. The charge amount measuring means 18 of this embodiment includes a discharge current-voltage conversion means 20a, a threshold value setting means 21a, a voltage comparison means 22a, a clock pulse generation means 23a, a discharge time detection means 24a, Voltage conversion means 25
a, threshold setting means 26a, and voltage comparing means 27a
And

FIG. 4 is an explanatory diagram for explaining the operation of each part of the charge amount measuring means 18 of the present embodiment. Although not illustrated, the horizontal axis indicates a common time axis. The vertical axis indicates the magnitude of the voltage detected by each unit.

The waveform (1) includes a waveform a indicating the high voltage output from the high voltage generator 17 and the threshold setting means 21.
A waveform b indicating a threshold value set to a is shown. In other words, the time during which the high voltage output from the high voltage generator 17 exceeds the threshold value setting means 21a can be understood from the waveform (1).

A waveform (2) shows a waveform c output from the voltage comparison means 22a. That is, it is a voltage signal corresponding to the time when the waveform (1) exceeds the threshold setting means 21a.

The waveform (3) shows the clock pulse generating means 2
A waveform d of the clock pulse in which 3a occurs is shown. A waveform (4) shows a waveform e output from the discharge time detecting means 24a. That is, the waveform e indicates that the high voltage generated by the high voltage
This shows the number of pulses at each instant of a voltage exceeding the threshold value set in a.

The discharge time-voltage conversion means 25a generates a voltage signal indicating the cumulative value of the waveform (4) and outputs it to the voltage comparison means 27a. Voltage comparison means 2
7a generates a signal for driving the notifying means 28a when the accumulated value exceeds the threshold value set in the threshold value setting means 26a. That is, the notification unit 19 is driven when the discharge current due to the high voltage generated by the high voltage generator 17 reaches a predetermined charge amount.

The user can recognize the end time of the work by checking the notification sound of the notification means 19. As described above, according to the present embodiment, the notification of the end of the work can be accurately grasped by operating the notifying unit 19 based on the charge amount measured by the charge amount measuring unit 18.

As described above, according to the present embodiment, the high voltage generating means 17, the positive and negative electrodes 12, and the charge measuring means 18 for detecting the discharge current are provided. Notification means 1 when the current reaches a predetermined charge amount
By using 9 to notify the end of extermination, a weed extermination device that can exterminate weeds efficiently without waste can be realized.

The high voltage generator 17 and the electric charge measuring means 18 are arranged in a grip portion 15 which can be gripped and operated by a user, so that the operation of the device is easy, and the weeds are efficiently used without waste. It is possible to realize a weed control device capable of controlling germs.

The positive and negative electrodes 12 are fixed at predetermined intervals to a fixing portion 16 attached to the support portion 11 connected to the grip portion 15, so that discharge can be caused only by approaching to weeds. It is possible to realize a weed extermination device which can easily and efficiently exterminate weeds without waste.

[0024]

According to the first aspect of the present invention, there is provided a high voltage generating means, positive and negative electrodes, and a charge measuring means for detecting a discharge current, wherein the discharge current measured by the charge measuring means is a predetermined value. As a configuration for notifying the end of extermination by the notification means when the charge amount is reached, a weed extermination device capable of exterminating weeds efficiently without waste is realized.

According to a second aspect of the present invention, the high voltage generator and the charge measuring means are arranged in a grip portion which is gripped and operated by a user, so that the operation is easy and the weeds are efficiently eliminated. It realizes a weed control device that can be used.

According to a third aspect of the present invention, the positive and negative electrodes are fixed at predetermined intervals to a fixing portion attached to a support portion connected to the grip portion, so that the operation is easy and the weeds are efficiently eliminated. It realizes a weed control device that can be used.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of a weed control device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating an operation state of the same.

FIG. 3 is a circuit diagram showing a configuration of the charge amount measuring means.

FIG. 4 is a waveform chart showing the operation of each unit.

FIG. 5 is an explanatory view illustrating the configuration and handling of a conventional weed control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Support part 12 A pair of electrodes 16 Fixing part 17 High voltage generator 18 Charge measuring means 19 Notification means

Claims (3)

[Claims] 1. A high-voltage generating means, positive and negative electrodes, and a charge measuring means for detecting a discharge current, wherein when the discharge current measured by the charge measuring means reaches a predetermined charge, the notification means eliminates the discharge. Weed control device that notifies the end. 2. The high-voltage generator and the charge amount measuring means,
The weed control device according to claim 1, wherein the device is disposed in a grip portion that is gripped and operated by a user. 3. The weed control device according to claim 2, wherein the positive and negative electrodes are fixed at predetermined intervals to a fixing portion attached to a support portion connected to the grip portion.